Question

How long can you use a cell phone before getting a brain tumor?​

Answer 1

Cell phones do not cause cancer, no matter how long they are used, because they communicate using radio waves. Radio waves simply don't have enough energy per photon to ionize atoms. The World Health Organization states, "Only the high frequency portion of the electromagnetic spectrum, which includes X rays and gamma rays, is ionizing". Cancer occurs when the DNA in a cell is altered so that the cell grows in an uncontrolled way. DNA can be altered in many ways, but when it comes to cancer due to radiation exposure, an electron must be knocked off a molecule by a bit of radiation. The smallest possible bit of electromagnetic radiation is known as a photon. Electrons are bound to molecules, so it takes a certain minimum energy to knock off the electron. Light with frequencies above ultraviolet (x-rays and gamma rays) are known as ionizing radiation because each photon has enough energy to knock an electron off a molecule. Photons of light with frequencies at and below ultraviolet (radio waves, microwaves, infrared, red, orange, yellow, blue, violet) are non-ionizing. They simply don't have enough energy to remove an electron and cause cancer.

Answer 2

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